That's exactly the approach I've taken since last Wednesday here in CT. Many of the business still have signs requesting customers to mask up but I'm having none of it. I just go right in there with no mask. If they tell me to put it on, I'll just leave and I'll never come back. I won't give the employees a hassle but I'll find the store manager's name and send him/her an email politely stating so.
So far however, nobody has challenged me about not wearing a mask but I have gotten a few dirty looks from customer Karens.
Signs trigger my SOSI
S udden
O nset
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I lliteracy